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Appendix 7. Explanation of Alarms
Appendix 7.12 Program Errors (P)
P436 G29/M ERROR
Details
An M command was issued simultaneously in the G29 command block.
Remedy
- Place the M code command, which cannot be issued in a G29 command block, in
separate block from G29 command block.
P438 NOT USE (G52)
Details
A local coordinate system command was issued during execution of the G54.1 command.
Remedy
- Correct the program.
P450 NO CHUCK BARR.
Details
The chuck barrier on command (G22) was specified although the chuck barrier is out of
specifications.
Remedy
- Check the specifications.
P460 TAPE I/O ERROR
Details
An error has occurred in the tape reader. Otherwise an error has occurred in the printer
during macro printing.
Remedy
- Check the power and cable of the connected devices.
- Correct the I/O device parameters.
P461 FILE I/O ERROR
Details
- A file of the machining program cannot be read.
Remedy
- In memory mode, the programs stored in memory may have been destroyed. Output all of
the programs and tool data and then format the system.
P501 Cross (G110) impossible
Details
Mixed control (cross axis control) command (G110) was issued in the following modes.
- During nose R compensation mode
- During pole coordinate interpolation mode
- During cylindrical interpolation mode
- During balance cut mode
- During fixed cycle machining mode
- During facing turret mirror image
- During constant surface speed control mode
- During hobbing mode
- During axis name switch
Remedy
- Correct the program.
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